linux-kernel - Re: [PATCH bpf V4 0/5] XDP-hints: API change for RX-hash kfunc bpf_xdp_metadata_rx

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Message-ID: <ZCcKr69B+HKJdFEl@google.com>
Date:   Fri, 31 Mar 2023 09:30:39 -0700
From:   Stanislav Fomichev <sdf@...gle.com>
To:     Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     bpf@...r.kernel.org,
        "Toke Høiland-Jørgensen" <toke@...hat.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        martin.lau@...nel.org, ast@...nel.org, daniel@...earbox.net,
        alexandr.lobakin@...el.com, larysa.zaremba@...el.com,
        xdp-hints@...-project.net, anthony.l.nguyen@...el.com,
        yoong.siang.song@...el.com, boon.leong.ong@...el.com,
        intel-wired-lan@...ts.osuosl.org, pabeni@...hat.com,
        jesse.brandeburg@...el.com, kuba@...nel.org, edumazet@...gle.com,
        john.fastabend@...il.com, hawk@...nel.org, davem@...emloft.net,
        tariqt@...dia.com
Subject: Re: [PATCH bpf V4 0/5] XDP-hints: API change for RX-hash kfunc bpf_xdp_metadata_rx_hash

On 03/31, Jesper Dangaard Brouer wrote:
> Current API for bpf_xdp_metadata_rx_hash() returns the raw RSS hash value,
> but doesn't provide information on the RSS hash type (part of 6.3-rc).
> 
> This patchset proposal is to change the function call signature via adding
> a pointer value argument for providing the RSS hash type.

Acked-by: Stanislav Fomichev <sdf@...gle.com>

> ---
> 
> Jesper Dangaard Brouer (5):
>       xdp: rss hash types representation
>       mlx5: bpf_xdp_metadata_rx_hash add xdp rss hash type
>       veth: bpf_xdp_metadata_rx_hash add xdp rss hash type
>       mlx4: bpf_xdp_metadata_rx_hash add xdp rss hash type
>       selftests/bpf: Adjust bpf_xdp_metadata_rx_hash for new arg
> 
> 
>  drivers/net/ethernet/mellanox/mlx4/en_rx.c    | 22 ++++++-
>  drivers/net/ethernet/mellanox/mlx4/mlx4_en.h  |  3 +-
>  .../net/ethernet/mellanox/mlx5/core/en/xdp.c  | 63 ++++++++++++++++++-
>  drivers/net/veth.c                            | 11 +++-
>  include/linux/mlx5/device.h                   | 14 ++++-
>  include/linux/netdevice.h                     |  3 +-
>  include/net/xdp.h                             | 48 ++++++++++++++
>  net/core/xdp.c                                | 10 ++-
>  .../selftests/bpf/prog_tests/xdp_metadata.c   |  2 +
>  .../selftests/bpf/progs/xdp_hw_metadata.c     | 14 +++--
>  .../selftests/bpf/progs/xdp_metadata.c        |  6 +-
>  .../selftests/bpf/progs/xdp_metadata2.c       |  7 ++-
>  tools/testing/selftests/bpf/xdp_hw_metadata.c |  2 +-
>  tools/testing/selftests/bpf/xdp_metadata.h    |  1 +
>  14 files changed, 182 insertions(+), 24 deletions(-)
> 
> --
>